High-waterproofness wire-to-board electric connector

Abstract

The utility model relates to the technical field of electric connector manufacturing, in particular to a high-waterproofness wire-to-board electric connector. The male seat end plastic water blocking piece is arranged in the inner cavity of the male seat end plastic shell and is attached to the blocking body. After the male seat of the connector is assembled, the circumferential side wall of each pin is subjected to the elastic wrapping force from the plastic water blocking piece at the male seat end. After the connector female seat is assembled, the female seat end plastic water blocking piece is attached to the female seat end plastic shell due to the action of pressing force from the female seat end cover plate and elastically deforms, and the circumferential side wall of each cable is subjected to the action of elastic wrapping force from the female seat end plastic water blocking piece. And in the state that the plug-in is finished, the silica gel waterproof ring elastically deforms due to the action of common extrusion force from the connector male seat and the connector female seat so as to fill the plug-in assembly gap. Therefore, the path of external water or water vapor invading the wire-to-board electric connector is effectively blocked, and the waterproof performance of the wire-to-board electric connector is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connector manufacturing, in particular to a highly waterproof wire-to-board electric connector. Background Art

[0002] A wire-to-board connector is a device used to connect circuit boards to wires. It uses a male and female connector to achieve the electrical connection between the circuit board and the cable. Wire-to-board connectors are used in a variety of applications, including consumer electronics like televisions and computers, as well as industrial applications such as automotive and avionics.

[0003] Wire-to-board connectors are generally composed of a male and female portion, wherein the male portion includes a male end insulating rubber seat and a pin assembly. The male end insulating rubber seat is formed by the male end plastic shell and the male end cover plate being fastened together. The pin assembly is composed of a plurality of pins that cross the inner cavity of the male end plastic shell and are arranged in a rectangular array. The female portion is mainly composed of a female end insulating rubber seat, a terminal assembly, and a cable. The female end insulating rubber seat is formed by the female end plastic shell and the female end cover plate being fastened together. The terminal assembly is composed of a plurality of terminal blocks inserted into the female end plastic shell. Multiple cables cross the female end cover plate and are held by the terminal blocks one by one and are electrically conductive. However, in actual applications, the waterproof performance of the wire-to-board connector based on the above-mentioned design structure is extremely poor. Specifically, in highly humid environments, external water or water vapor inevitably penetrates the inner cavity of the wire-to-board connector through the assembly gaps formed between the cable and the female end cover, the pin and the male end cover, or through the assembly gaps formed between the female end plastic shell and the female end cover. This will affect the stability and reliability of the electrical conduction between the PCB board and the cable, and will inevitably affect the actual application effect of the wire-to-board connector. Therefore, technical personnel are urgently needed to solve the above problems. Utility Model Content

[0004] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and, after continuous experimentation and modifications by technicians with many years of R&D experience in this industry, ultimately led to the emergence of this highly waterproof wire-to-board electrical connector.

[0005] In order to solve the above technical problems, the utility model relates to a highly waterproof wire-to-board electrical connector, which is used to establish an electrical connection between a cable and a PCB board, and is composed of a plug-in combination of a connector male seat and a connector female seat.

[0006] The connector male connector consists of an insulating rubber base and a pin assembly. The insulating rubber base is formed by snapping together a plastic shell and a cover. The pin assembly consists of multiple pins arranged in a rectangular array, extending across the cover and electrically connecting to the PCB.

[0007] The connector receptacle consists of an insulating rubber base, a terminal assembly, and cables. The insulating rubber base is formed by snapping together a plastic shell and a cover plate. The terminal assembly consists of multiple terminals arranged in a rectangular array and inserted into the plastic shell. Multiple cables traverse the cover plate and are held by the corresponding terminals, ensuring electrical continuity.

[0008] The male connector also includes a plastic water-blocking component at the male end, and the female connector also includes a plastic water-blocking component at the female end and a silicone waterproof ring.

[0009] A baffle is molded within the male connector's plastic housing, thereby dividing its interior into a rear chamber and a front chamber. A male connector plastic water-blocking element is placed within the front chamber, abutting against the baffle. The plastic water-blocking element has male connector mounting holes for the pins. When the connector male connector is assembled, the elastic holding force of the plastic water-blocking element is applied to the circumferential sidewalls of each pin.

[0010] The female connector's plastic water-blocking member is formed with multiple female connector-end mounting holes for cables to pass through. When the connector female connector is assembled, the female connector's plastic water-blocking member, acting under lateral pressure from the female connector cover, abuts against the female connector's plastic shell and undergoes elastic deformation. This elastically supports the circumferential sidewalls of the cables.

[0011] The silicone waterproof ring is mounted on the circumferential side wall of the plastic shell at the female end, and when the highly waterproof wire-to-board electrical connector is mated and assembled, it undergoes adaptive elastic deformation due to the lateral pressure from the connector male end to fill and seal the assembly gap.

[0012] As a further improvement to the technical solution disclosed in the present invention, opposite to the male end mounting hole, the rear side wall of the male end plastic water-blocking member extends backward to form a plurality of male end waterproof reinforcement extensions, and correspondingly, the front side wall of the baffle extends backward to form a male end extrusion groove for inserting the male end waterproof reinforcement extensions. Opposite to the female end mounting hole, the front side wall of the female end plastic water-blocking member extends forward to form a plurality of female end front waterproof reinforcement extensions, and the rear side wall of the female end plastic water-blocking member extends backward to form a plurality of female end rear waterproof reinforcement extensions, and correspondingly, the rear side wall of the female end plastic shell extends forward to form a female end front extrusion groove for inserting the female end front waterproof reinforcement extensions, and the front side wall of the female end cover plate extends backward to form a female end rear extrusion groove for inserting the female end rear waterproof reinforcement extension.

[0013] As a further improvement to the disclosed technical solution of the present utility model, around its circumferential direction, the outer side wall of the female seat end plastic shell continues to extend outward to form a receiving groove for installing a silica gel waterproof ring.

[0014] As a further improvement to the disclosed technical solution of the present utility model, they are evenly distributed around its circumferential side wall. The outer side wall of the male seat end plastic shell extends outward to form at least two snap convex platforms. Correspondingly, they are evenly distributed around its circumferential side wall. The outer side wall of the female seat end plastic shell extends outward to form swing-arm snap arms that are paired and combined with the snap convex platforms. The swing-arm snap arm includes a flexibly deflecting section and a horizontally placed functional section that are connected as a whole. According to different specific application functions, the horizontally placed functional section is divided into a pressing functional subsection and a hooking functional subsection. The free end of the hooking functional subsection is formed with a hooking extension that is adapted to the snap convex platform.

[0015] As a further improvement to the disclosed technical solution of the present utility model, the snap convex platform undergoes an oblique cutting process to form a male seat end guiding inclined surface thereon. The hooking extension undergoes an oblique cutting process to form a female seat end guiding inclined surface thereon.

[0016] As a further improvement to the disclosed technical solution of the present utility model, the connector female seat further includes a locking member. The locking member is used to limit the rotational freedom of the swing-arm snap arm, and it remains in an isolated state relative to both the female seat end insulating rubber seat and the male seat end insulating rubber seat. The locking member holds on the pressing functional subsection, filling the gap between the pressing functional subsection and the female seat end insulating rubber seat. The bottom wall and the top wall of the pressing functional subsection are respectively and correspondingly subjected to elastic pressing forces and elastic top forces from the locking member.

[0017] As a further improvement to the disclosed technical solution of the present utility model, the locking member is in a "U" shape, which is sequentially connected by a top section, a connecting transition section, and a pressing section. After the locking member is positioned relative to the connector female seat, the top section is elastically pressed between the female seat end insulating rubber seat and the horizontally placed functional section, and the top section applies an elastic pressing force to the horizontally placed functional section.

[0018] As a further improvement to the disclosed technical solution of the present utility model, an avoidance notch for avoiding the pressing functional subsection is opened on the connecting transition section, and the avoidance notch continues to expand to the pressing section until a limiting stop wall is formed on the pressing section. The top wall of the pressing functional subsection continues to extend outward to form a stepped limiting convex platform that is adapted to the limiting stop wall.

[0019] As a further improvement to the disclosed technical solution of the present utility model, the stepped limiting convex platform undergoes an oblique cutting process to form a side guiding inclined surface thereon.

[0020] As for the connector male socket alone, during the assembly stage in the workshop, after the plastic water barrier at the male socket end is assembled in the front sub-cavity, it remains in contact with the baffle body. With the help of the circumferential elastic wrapping of the plastic water barrier at the male socket end on the pin, good waterproof performance is achieved, preventing external water or water vapor from invading the inner cavity of the connector male socket along the pin.

[0021] With respect to the female connector, after it is assembled in the assembly workshop, the plastic water-blocking member at the female connector end undergoes elastic deformation due to the combined extrusion force from the plastic shell and the cover plate at the female connector end. Each female connector end mounting hole undergoes a necking deformation to tightly wrap the corresponding cable, and the assembly gap formed between the plastic shell and the cover plate at the female connector end is also effectively filled and sealed, thereby effectively preventing external water or water vapor from invading the inner cavity of the female connector along the cable or the assembly gap formed between the plastic shell and the cover plate at the female connector end.

[0022] As for the wire-to-board electrical connector as a whole, when the connector male and connector female are mated and assembled, the silicone waterproof ring undergoes elastic deformation due to the combined extrusion force from the male plastic shell and the female plastic shell, which can effectively fill and seal the mating gap formed between the connector male and connector female, thereby preventing external water or water vapor from invading through the mating gap.

[0023] The above three factors work together, and due to their material properties, the plastic water-blocking parts on both the male and female ends have good plasticity and resilience, which helps to better achieve a tight wrapping of the pins and the circumferential side walls of the cable, and effectively seals the assembly gap formed between the female end plastic shell and the female end cover. The silicone waterproof ring also has good plasticity and resilience, which helps to effectively seal the mating gap formed between the male and female connectors. As a result, the intrusion path of external water or water vapor is blocked, eliminating the occurrence of external water or water vapor intrusion into the wire-to-board electrical connector at the source, and significantly improving the waterproof performance of the wire-to-board electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the application state of the highly waterproof wire-to-board electrical connector disclosed in the present utility model (showing a PCB board).

[0026] Figure 2 It is a three-dimensional schematic diagram of the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0027] Figure 3 The utility model is a three-dimensional schematic diagram of a connector male socket in a highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0028] Figure 4 This is a three-dimensional schematic diagram of the plastic shell of the male end of the highly waterproof wire-to-board electrical connector disclosed in the present invention (with the hidden lines visible).

[0029] Figure 5 yes Figure 4 Top view of .

[0030] Figure 6 yes Figure 5 AA cross-sectional view.

[0031] Figure 7 It is a three-dimensional schematic diagram from one perspective of the plastic water-blocking component at the male end of the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0032] Figure 8 This is a three-dimensional schematic diagram from another perspective of the plastic water-blocking component at the male end of the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0033] Figure 9 yes Figure 3 Top view of .

[0034] Figure 10 yes Figure 9 BB cross-sectional view.

[0035] Figure 11 It is a three-dimensional schematic diagram of a connector female socket in a highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0036] Figure 12 The utility model discloses a three-dimensional schematic diagram of an insulating rubber seat at the female end of a highly waterproof wire-to-board electrical connector.

[0037] Figure 13 yes Figure 12 Top view of .

[0038] Figure 14 yes Figure 13 CC cross-sectional view.

[0039] Figure 15 yes Figure 12 Partially enlarged view of II.

[0040] Figure 16It is a three-dimensional schematic diagram of the plastic water-blocking component at the female socket end of the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0041] Figure 17 It is a three-dimensional schematic diagram from one perspective of a locking member in the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0042] Figure 18 It is a three-dimensional schematic diagram of another perspective of the locking member in the highly waterproof wire-to-board electrical connector disclosed in the utility model.

[0043] Figure 19 yes Figure 11 Top view of .

[0044] Figure 20 yes Figure 19 DD cross-sectional view.

[0045] Figure 21 yes Figure 2 A magnified view of the I part.

[0046] Figure 22 yes Figure 2 Top view of .

[0047] Figure 23 yes Figure 22 EE cross-sectional view.

[0048] 1-Male connector; 11-Male end insulating rubber seat; 111-Male end plastic shell; 1111-Blocking body; 11111-Male end extrusion groove; 1112-Snap boss; 11121-Male end guide slope; 112-Male end cover; 12-Pin assembly; 121-Pin; 13-Male end plastic water-blocking component; 131-Male end mounting hole; 132-Male end waterproof reinforcement extension; 2-Female connector; 21-Female end insulating rubber seat; 211-Female end plastic shell; 2111-Female end front extrusion groove; 2112-Accommodation groove; 2113-Swing arm snap arm; 21131-Flexible deflection section; 21132-Horizontal functional section; 211321-Press function section; 2113211-Stepped limiting boss; 21132111-Side-push guide slope; 211322-Hooking function segment; 2113221-Hooking extension; 21132211-Guiding slope at the female socket end; 212-Female socket end cover plate; 2121-Rear extrusion groove at the female socket end; 22-Terminal assembly; 221-Terminal; 23-Cable; 24-Plastic water-blocking component at the female socket end; 241-Female socket end mounting hole; 242-Front waterproof reinforced extension at the female socket end; 243-Rear waterproof reinforced extension at the female socket end; 25-Silicone waterproof ring; 26-Locking piece; 261-Top section; 262-Connection transition section; 2621-Avoidance gap; 263-Pressure section; 2631-Limiting stop against the wall. DETAILED DESCRIPTION

[0049] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0050] The following is a further detailed description of the present invention in conjunction with specific embodiments. Figure 1 、 2 As shown in the figure, the wire-to-board electrical connector is used to establish an electrical connection between a cable and a PCB board, and is composed of a plug-in combination of a connector male seat 1 and a connector female seat 2.

[0051] like Figure 3 、 9 As shown in Figure 10, the male connector 1 is mainly composed of several parts, such as the male end insulating rubber seat 11, the pin assembly 12, and the male end plastic water blocking member 13. Among them, the male end insulating rubber seat 11 is formed by the male end plastic shell 111 and the male end cover plate 112 being fastened together. The pin assembly 12 is composed of a plurality of pins 121 arranged in a rectangular array, crossing the male end cover plate 112, and electrically connected to the PCB board. Figure 4 、 5 As shown in FIG6 , a baffle 1111 is formed in the male end plastic shell 111, so that its inner cavity is divided into a rear sub-cavity and a front sub-cavity. The male end plastic water blocking member 13 is placed in the front sub-cavity and abuts against the baffle 1111. Figure 7 、 8 As shown in FIG, the male end plastic water blocking member 13 is formed with a male end embedding hole 131 for the pin 121 to be installed. When the connector male socket 1 is assembled, the circumferential side wall of each pin 121 is subjected to the elastic wrapping force from the male end plastic water blocking member 13.

[0052] During the assembly stage in the workshop, after the male-end plastic water-blocking component 13 is assembled in the front sub-chamber, it remains in contact with the baffle 1111. The male-end plastic water-blocking component 13 is subjected to external force, and the male-end embedding hole 131 undergoes adaptive diameter shrinkage deformation, so that each pin 121 is tightly wrapped circumferentially, thereby effectively preventing external water or water vapor from invading the inner cavity of the wire-to-board electrical connector along the pins.

[0053] like Figure 11 、 19As shown in FIG. 20 , the connector base 2 is mainly composed of a base end insulating rubber base 21, a terminal assembly 22, a cable 23, a base end plastic water blocking member 24, and a silicone waterproof ring 25. Among them, the base end insulating rubber base 21 is composed of a base end plastic shell 211 and a base end cover plate 212 (as shown in FIG. Figure 12 、 13 , 14). The terminal assembly 22 is composed of a plurality of terminal blocks 221 arranged in a rectangular array and inserted into the female end plastic shell 211. A plurality of cables 23 cross the female end cover plate 212, and their ends are held by the terminal blocks 221 one by one and electrically connected. Figure 16 As shown in the figure, the female-end plastic water-blocking member 24 is formed with a plurality of female-end insertion holes 241 for the cables 23 to pass through. When the connector female receptacle 2 is assembled, the female-end plastic water-blocking member 24 is pressed against the female-end plastic shell 211 by the lateral pressure from the female-end cover plate 212 and elastically deforms, allowing the circumferential side walls of each cable 23 to be elastically supported by the female-end plastic water-blocking member 24. The silicone waterproof ring 25 is fitted onto the circumferential side walls of the female-end plastic shell 211 and, correspondingly, extends outward from the outer side wall of the female-end plastic shell 211 to form a circumferential receiving groove 2112.

[0054] When the high waterproof wire-to-board electrical connector is plugged and assembled, it undergoes adaptive elastic deformation due to the lateral pressure from the male end plastic shell 11 to fill and seal the assembly gap (such as Figure 2 、 22 , as shown in 23).

[0055] When the connector female socket 2 is assembled, the female socket end plastic water-blocking component 24 undergoes elastic deformation due to the joint extrusion force from the female socket end plastic shell 211 and the female socket end cover plate 212, and each female socket end mounting hole 241 is able to undergo necking deformation to tightly wrap the corresponding cable 23. At the same time, the assembly gap formed between the female socket end plastic shell 211 and the female socket end cover plate 212 is also effectively filled and sealed, thereby effectively preventing external water or water vapor from invading the inner cavity of the wire-to-board electrical connector along the cable 23 or the assembly gap formed between the female socket end plastic shell 211 and the female socket end cover plate 212.

[0056] As for the wire-to-board electrical connector as a whole, when the connector male socket 1 and the connector female socket 2 are fully plugged together, the silicone waterproof ring 25 undergoes elastic deformation due to the combined extrusion force from the male end plastic shell 111 and the female end plastic shell 211, which can effectively fill and seal the mating gap formed between the connector male socket 1 and the connector female socket 2, thereby preventing external water or water vapor from invading through the mating gap.

[0057] The above three factors work together, and due to their material properties, both the male-end plastic water-blocking member 13 and the female-end plastic water-blocking member 24 have good plasticity and resilience, which facilitates better wrapping of the pin 121 and the circumferential side wall of the cable 23, and effectively blocks the assembly gap formed between the female-end plastic shell 211 and the female-end cover plate 212. The silicone waterproof ring 25 also has good plasticity and resilience, which facilitates better sealing of the mating gap formed between the male connector 1 and the female connector 2. As a result, the intrusion path of external water or water vapor is blocked, eliminating the intrusion of external water or water vapor into the wire-to-board electrical connector from the source, and its waterproof performance is greatly improved.

[0058] As attached Figure 7 、 8 As shown in , opposite to the male end embedding hole 131, the rear side wall of the male end plastic water-blocking component 13 extends backward to form a plurality of male end waterproof reinforcement extensions 132. Correspondingly, the front side wall of the baffle 1111 extends backward to form a male end extrusion groove 11111 for inserting the male end waterproof reinforcement extension 132. During the workshop assembly stage, when the male end plastic water-blocking component 13 is assembled relative to the baffle 1111, as the depth of the male end waterproof reinforcement extension 132 relative to the male end extrusion groove 11111 increases, the circumferential side walls of the male end waterproof reinforcement extension 132 elastically shrink due to the lateral extrusion force from the male end extrusion groove 11111, and the circumferential elastic holding force on the pin 121 is increased, and its circumferential assembly gap is completely blocked (as shown in FIG. Figure 9 、 10 ), thereby effectively preventing water or water vapor from intruding into the inner cavity of the connector male socket 1, thereby ensuring the stability and reliability of the electrical conduction between the pin 121 and the cable 23.

[0059] As attached Figure 12 、 13As shown in Figures 14 and 16, the front side wall of the plastic water-blocking component 24 at the female base end is extended forward to form a plurality of front waterproof reinforcement extensions 242 at the female base end, and the rear side wall thereof is extended backward to form a plurality of rear waterproof reinforcement extensions 243 at the female base end. Correspondingly, the rear side wall of the plastic shell 211 at the female base end is extended forward to form a front extrusion groove 2111 at the female base end for inserting the front waterproof reinforcement extensions 242 at the female base end, and the front side wall of the female base end cover plate 212 is extended backward to form a rear extrusion groove 2121 at the female base end for inserting the rear waterproof reinforcement extensions 243 at the female base end. During the assembly stage in the workshop, when the mother seat end cover plate 212 is assembled with respect to the mother seat end plastic shell 211, the front waterproof reinforcement extension 242 of the mother seat end and the rear waterproof reinforcement extension 243 of the mother seat end are respectively and forcibly squeezed into the front extrusion groove 2111 and the rear extrusion groove 2121 of the mother seat end. The front waterproof reinforcement extension 242 of the mother seat end and the rear waterproof reinforcement extension 243 of the mother seat end undergo elastic shrinkage deformation due to the lateral extrusion force, and the corresponding cable 23 is tightly wrapped. At the same time, the assembly gap formed between the mother seat end cover plate 212 and the mother seat end plastic shell 211 is also tightly filled and sealed by the mother seat end plastic water blocking member 24 (such as Figure 19 、 20 ).

[0060] As is known to common sense, the connector male socket 1 and the connector female socket 2 can adopt a variety of design structures to achieve a plug-in combination. However, here we recommend an implementation scheme with a very simple design structure, convenient locking / unlocking operation, and relatively loose requirements on positioning accuracy, specifically: Figure 3-6 As shown in 12-14, two snap-fitting bosses 1112 are evenly distributed around the circumferential sidewalls and extend outward from the outer sidewalls of the male end plastic shell 111. Oppositely, two swing-type snap-fitting arms 2113 are evenly distributed around the circumferential sidewalls and extend outward from the outer sidewalls of the female end plastic shell 211 to form a pairing combination with the above-mentioned snap-fitting bosses 1112. Figure 14 、 15As shown in the figure, the swing-arm snap arm 2113 includes a flexible deflection section 21131 and a flat functional section 21132, which are connected as one body. Depending on the specific application function, the flat functional section 21132 is divided into a pressing functional section 211321 and a hooking functional section 211322. The free end of the hooking functional section 211322 is formed with a hooking lower extension 2113221 that is compatible with the snap boss 1112. The snap boss 1112 is beveled to form a male end guide slope 11121 thereon. The hooking lower extension 2113221 is beveled to form a female end guide slope 21132211 thereon. During the process of the consumer performing the plug-in combination operation, the connector male socket 1 gradually approaches the connector female socket 2 due to the hand-held action until the snap boss 1112 and the hook extension 2113221 are critically contacted. At this moment, the connector male socket 1 continues to be pushed, and the male end guide slope 11121 is able to slide along the female end guide slope 21132211. At the same time, the horizontal functional section 21132 undergoes adaptive deflection motion due to the reaction force, until the snap boss 1112 completely passes the hook extension 2113221, and the connector male socket 1 and the connector female socket 2 are snap-locked. When the male connector 1 and the female connector 2 need to be disengaged, the consumer only needs to press the two opposite pressing function segments 211321 at the same time, and the flat function segment 21132 can perform the yaw motion in the opposite direction until the two opposite hook extensions 2113221 can smoothly pass over the corresponding snap bosses 1112 (such as Figure 22 、 23 ).

[0061] Depend on Figure 1 、 2 As shown in Figures 1 and 11, the female connector 2 is further provided with a locking member 26. The locking member 26 is isolated relative to the female end insulating rubber seat 21 and the male end insulating rubber seat 11. The locking member 26 is held on the pressing function segment 211321, and the gap between the pressing function segment 211321 and the female end plastic shell 211 is filled. The bottom wall and the top wall of the pressing function segment 211321 are respectively subjected to the elastic supporting force and the elastic pressing force from the locking member 26. As shown in the attached figure, Figure 17 、 18As shown, the locking member 26 is in a "U" shape and is sequentially connected by a pressing section 261, a connecting transition section 262, and a pressing section 263. After the locking member 26 is positioned relative to the female connector base 2, the pressing section 261 is elastically pressed against the insulating rubber seat 21 at the base end of the female connector and the hooking functional section 211322, and the pressing section 261 applies an elastic pressing force towards the flat functional section and the hooking functional section 211322. An avoidance notch 2621 for avoiding the pressing functional section 211321 is formed on the connecting transition section 262, and the avoidance notch 2621 continues to extend to the pressing section 263 until a limiting stop wall 2631 is formed on the pressing section 263. The top wall of the pressing functional section continues to extend outwards to form a stepped limiting boss adapted to the limiting stop wall. In this way, when the hooking extension 2113221 realizes the hooking and limiting operation on the corresponding snap boss 1112, it means that the male connector 1 and the female connector 2 are in an inserted combination. Then, the consumer pushes and sleeves the locking member 26 along the pressing functional section 211321, thereby effectively restricting the yawing movement of the flat functional section 21132. Even if the pressing functional section 211321 is accidentally affected by an external force, the flat functional section 21132 will not yaw, and the hooking extension 2113221 always maintains a reliable hooking on the snap boss 1112, thus effectively preventing the accidental loosening of the male connector 1 relative to the female connector 2.

[0062] As Figure 11-15 , as shown in FIGS. 19 - 23, the stepped limiting boss 2113211 is subjected to an oblique cutting process to form a side guiding inclined surface 21132111 thereon. Thus, under the guiding action of the side guiding inclined surface 21132111, the difficulty of sleeving the locking member 26 along the extending direction of the pressing functional section 211321 is effectively reduced. More importantly, during the process of sleeving the locking member 26, with the help of the side guiding inclined surface 21132111, the locking member 26 can apply a reaction force to itself in real time, and as the process progresses, the value of the force also changes, and the flat functional section 21132 undergoes an adaptive yawing movement, which is beneficial to ensuring that the locking member 26 occupies a correct relative position relative to the swing - type snap arm 2113 for a long time after assembly.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A highly waterproof wire-to-board electrical connector, used to establish an electrical connection between a cable and a PCB, consisting of a male connector and a female connector. The connector male socket includes a male socket end insulating rubber seat and a pin assembly; the male socket end insulating rubber seat is formed by buckling the male socket end plastic shell and the male socket end cover plate; the pin assembly is composed of a plurality of pins arranged in a rectangular array, crossing the male socket end cover plate, and electrically connected to the PCB board; The connector base includes a base end insulating rubber base, a terminal assembly, and a cable; the base end insulating rubber base is formed by a base end plastic shell and a base end cover plate being fastened together; the terminal assembly is composed of a plurality of terminal blocks arranged in a rectangular array and inserted into the base end plastic shell; a plurality of the cables cross the base end cover plate and are held one by one by the terminal blocks and electrically connected; It is characterized by: The male connector also includes a plastic water-blocking member at the male end; the female connector also includes a plastic water-blocking member at the female end and a silicone waterproof ring; A baffle is formed in the male end plastic shell to divide its inner cavity into a rear sub-cavity and a front sub-cavity; the male end plastic water-blocking member is placed in the front sub-cavity and abuts against the baffle; the male end plastic water-blocking member is formed with a male end mounting hole for the pin to be installed; and when the connector male is assembled, the circumferential side wall of each pin is subjected to the elastic wrapping force of the male end plastic water-blocking member; The female end plastic water-blocking member is formed with a plurality of female end mounting holes for the cables to pass through; when the connector female is assembled, the female end plastic water-blocking member is pressed against the female end plastic shell by the lateral pressure from the female end cover plate and elastically deforms, so that the circumferential side walls of each cable are subjected to the elastic wrapping force of the female end plastic water-blocking member; The silicone waterproof ring is mounted on the circumferential side wall of the plastic shell at the female end, and when the highly waterproof wire-to-board electrical connector is fully plugged together, it undergoes adaptive elastic deformation to fill and seal the assembly gap due to the lateral pressure from the connector male seat.

2. The highly waterproof wire-to-board electrical connector according to claim 1, characterized in that: Opposite the male end embedding hole, the rear side wall of the male end plastic water-blocking member extends backward to form a plurality of male end waterproof reinforcement extensions, and correspondingly, the front side wall of the partition body extends backward to form a male end extrusion groove for the male end waterproof reinforcement extension to be inserted; opposite the female end embedding hole, the front side wall of the female end plastic water-blocking member extends forward to form a plurality of female end front waterproof reinforcement extensions, and the rear side wall of the female end plastic water-blocking member extends backward to form a plurality of female end rear waterproof reinforcement extensions, and correspondingly, the rear side wall of the female end plastic shell extends forward to form a female end front extrusion groove for the female end front waterproof reinforcement extension to be inserted, and the front side wall of the female end cover plate extends backward to form a female end rear extrusion groove for the female end rear waterproof reinforcement extension to be inserted.

3. The highly waterproof wire-to-board electrical connector according to claim 1, wherein: Circumferentially around it, the outer side wall of the plastic housing at the female socket end extends further outwards to form a receiving groove for installing a silicone waterproof ring.

4. The highly waterproof wire-to-board electrical connector according to any one of claims 1 to 3, characterized in that: They are evenly distributed around its circumferential side wall. The outer side wall of the plastic housing at the male socket end extends outwards to form at least two snap bosses. Correspondingly, they are evenly distributed around its circumferential side wall. The outer side wall of the plastic housing at the female socket end extends outwards to form swing-type snap arms that are paired and combined with the snap bosses; the swing-type snap arms include a flexibly deflectable section and a horizontally placed functional section connected as a whole; according to different specific application functions, the horizontally placed functional section is divided into a pressing functional subsection and a hooking functional subsection; a hooking extension adapted to the snap boss is formed at the free end of the hooking functional subsection.

5. The highly waterproof wire-to-board electrical connector according to claim 4, characterized in that: The snap boss undergoes a chamfering process to form a guiding inclined surface at the male socket end on it; the hooking extension undergoes a chamfering process to form a guiding inclined surface at the female socket end on it.

6. The highly waterproof wire-to-board electrical connector according to claim 4, characterized in that: The connector female socket further includes a locking member; the locking member is used to limit the rotational freedom of the swing-type snap arms, and it remains in an isolated state relative to both the plastic insulating seat at the female socket end and the plastic insulating seat at the male socket end; the locking member holds on the pressing functional subsection, and the gap between the pressing functional subsection and the plastic insulating seat at the female socket end is filled, and the bottom wall and the top wall of the pressing functional subsection are respectively and correspondingly subjected to elastic pressing forces and elastic top forces from the locking member.

7. The highly waterproof wire-to-board electrical connector according to claim 6, characterized in that: The locking member is in a "U" shape and is sequentially composed of a top section, a connecting transition section, and a pressing section; when the locking member is positioned relative to the connector female socket, the top section is elastically pressed between the plastic insulating seat at the female socket end and the horizontally placed functional section, and the top section applies an elastic pressing force towards the horizontally placed functional section.

8. The highly waterproof wire-to-board electrical connector according to claim 7, characterized in that: An avoidance notch for avoiding the pressing functional subsection is formed on the connecting transition section, and the avoidance notch continues to extend to the pressing section until a limiting stop wall is formed on the pressing section; a stepped limiting boss adapted to the limiting stop wall is formed by continuously extending outwards from the top wall of the pressing functional subsection.

9. The highly waterproof wire-to-board electrical connector according to claim 8, characterized in that: The stepped limiting boss undergoes a chamfering process to form a side guiding inclined surface on it.

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